rocker adj. screw , how many threads

My original pushrods are 5/16" and so are the rocker balls. My replacement pushrods are Comp #7692 and are 5/16" also. The cups are the same size between the two. I don't remember how many threads were exposed on the adjusters with my stock heads and original valvetrain. When I measured for pushrods the first time I didn't have enough of the ball end of the rocker adjuster exposed and my pushrod checker has a smaller cup so it looked like clearance wasn't an issue.When I got my pushrods and tried them the cups hit the rocker body because the ball end of the adjuster wasn't out far enough.
After remeasuring and a shorter pushrod no more issues. Mike